Resolving the status of the genera Gastrophysus and Geneion in the family Tetraodontidae (Teleostei: Tetraodontiformes)
Howard L. Jelks
2018, Zootaxa (4532) 288-292
Maintaining a current list of valid names and taxonomy for biodiversity is an ever-increasing challenge for the Integrated Taxonomic Information System (ITIS 2017). Advances in molecular techniques and the discovery of many cryptic taxa have dramatically increased the number of species and resulted in revised interpretation of phylogenetic relationships. Occasionally...
Estimating the societal benefits of carbon dioxide sequestration through peatland restoration
Emily Pindilli, Rachel Sleeter, Dianna M. Hogan
2018, Ecological Economics (154) 145-155
The Great Dismal Swamp National Wildlife Refuge (GDS) is a forested peatland that provides a number of ecosystem services including carbon (C) sequestration. We modeled and analyzed the potential capacity of the GDS to sequester C under four management scenarios: no management, no management with catastrophic fire, current management, and...
Post‐release predation mortality of age‐0 hatchery‐reared Chinook salmon from non‐native smallmouth bass in the Snake River
John M. Erhardt, Kenneth F. Tiffan
2018, Fisheries Management and Ecology (25) 474-487
Release of age‐0 hatchery‐reared fall Chinook salmon, Oncorhynchus tshawytscha(Walbaum), in the Snake River resulted in up to 30‐fold increases in salmon consumption by non‐native smallmouth bass, Micropterus dolomieu Lacepѐde. In an upper river reach, smallmouth bass fed intensively during a release in May, but Chinook salmon consumption returned to pre‐release levels within 1–2 days...
A diverse suite of pharmaceuticals contaminates stream and riparian food webs
Erinn K. Richmond, Emma J. Rosi, David M. Walters, Jerker Fikk, Stephen K. Hamilton, Tomas Brodin, Anna Sundelin, Michael R. Grace
2018, Nature Communications (9) 1-9
A multitude of biologically active pharmaceuticals contaminate surface waters globally, yet their presence in aquatic food webs remain largely unknown. Here, we show that over 60 pharmaceutical compounds can be detected in aquatic invertebrates and riparian spiders in six streams near Melbourne, Australia. Similar concentrations in aquatic invertebrate larvae and...
Trace element characterisation of MAD‐559 zircon reference material for ion microprobe analysis
Matthew A. Coble, Jorge A. Vazquez, Andrew P. Barth, Joseph L. Wooden, Dale Burns, Andrew R. C. Kylander-Clark, Simon Jackson, Cara E. Vennari
2018, Geostandards and Geoanalytical Research (42) 481-497
We document the composition of a natural zircon gemstone sourced from Madagascar, MAD‐559 – a new reference material for calibrating trace element mass fractions in zircon measured by SIMS. The composition of MAD‐559 was quantified by calibration relative to the well‐documented zircon reference material 91500, for which we compiled existing...
Global Earthquake Model (GEM) Risk Map
V. Silva, D. Amo-Oduro, A. Calderon, J. Dabbeek, V. Despotaki, L. Martins, A. Rao, M. Simionato, D. Vigano, C. Yepes, A. Acevedo, H. Crowley, Nick Horspool, Kishor S. Jaiswal, M. Journeay, M. Pittore
2018, Report
The Global Earthquake Risk Map (v2018.1) comprises four global maps. The main map presents the geographic distribution of average annual loss (USD) normalized by the average construction costs of the respective country (USD/m2 due to ground shaking in the residential, commercial and industrial building stock, considering contents,...
Consequences of abrading bed load on vertical and lateral bedrock erosion in a curved experimental channel
Jagriti Mishra, Takuya Inoue, Yasuyuki Shimizu, Tamaki Sumner, Jonathan M. Nelson
2018, Journal of Geophysical Research F: Earth Surface (123) 3147-3161
In this study, we conducted multiple physical experiments to estimate the efficacy and spatial pattern of erosion by abrading sediment moving through a simple U‐shaped channel bend with erodible bed and banks. The experiments showed that in the bend, lateral abrasion followed a monotonically increasing linear relationship with sediment feed...
Prevalence and risk factors of Trichomonas gallinae and trichomonosis in golden eagle (Aquila chrysaetos) nestlings in western North America
Benjamin M Dudek, Michael N. Kochert, Joseph G. Barnes, Peter H. Bloom, Joseph M. Papp, Richard W. Gerhold, Kathryn E. Purple, Kenneth V. Jacobson, Charles R. Preston, Chris R. Vennum, James W. Watson, Julie A. Heath
2018, Journal of Wildlife Diseases (54) 755-764
Avian trichomonosis, caused by the protozoan Trichomonas gallinae, affects bird-eating raptors worldwide. Raptors can develop trichomonosis by feeding on infected prey, particularly Rock Pigeons (Columba livia), which are a reservoir for T. gallinae. Raptors may be particularly vulnerable to T. gallinae infection in degraded habitats, where changes in resources may cause raptors to switch...
No flood effect on recruitment of a small Louisiana black bear population
Joseph D. Clark, Kaitlin C. O’Connell-Goode, Carrie L. Lowe, Sean M. Murphy, Sutton C. Maehr, Maria M. Davidson, Jared S. Laufenberg
2018, Journal of Wildlife Management (82) 566-572
A flood event in 2011 had minor impacts on apparent survival and movement probabilities of a small, isolated population of Louisiana black bears (Ursus americanus luteolus) in the Upper Atchafalaya River Basin, Louisiana, USA. However, the potential effects of the flood on recruitment of juveniles into the population, then listed...
How or when samples are collected affects measured arsenic concentration in new drinking water wells
Melinda L. Erickson, Helen F. Malenda, Emily C. Berquist
2018, Groundwater (56) 921-933
Naturally occurring arsenic can adversely affect water quality in geologically diverse aquifers throughout the world. Chronic exposure to arsenic via drinking water is a human health concern due to risks for certain cancers, skin abnormalities, peripheral neuropathy, and other negative health effects. Statewide in Minnesota, USA, 11% of samples from...
Event-response ellipses: A method to quantify and compare the role of dynamic storage at the catchment scale in snowmelt-dominated systems
Jessica M. Driscoll, Thomas Meixner, Noah P. Molotch, Ty P. A. Ferre, Mark W. Williams, James O. Sickman
2018, Water (10) 1-17
A method for quantifying the role of dynamic storage as a physical buffer between snowmelt and streamflow at the catchment scale is introduced in this paper. The method describes a quantitative relation between hydrologic events (e.g., snowmelt) and responses (e.g., streamflow) by generating event-response ellipses that can be used to...
Estimates of abundance and longevity of Bridled Quail-Doves (Geotrygon mystacea) on Guana Island, British Virgin Islands
Clint W. Boal
2018, Wilson Journal of Ornithology (130) 981-987
The Bridled Quail-Dove (Geotrygon mystacea) is a columbiform resident of the eastern Caribbean. It is a poorly studied species with a lack of quantitative data to assess population status, but perceived population declines have led to it being considered a species of conservation concern on many islands....
Which geologic factors control permeability development in geothermal systems? The geologic structure of Dixie Valley
Drew L. Siler, Jonathan M. G. Glen
2018, Geothermal Resources Council Transactions (42)
Geothermal systems occur where subsurface permeability and temperature are sufficiently high to drive fluid circulation. In the Great Basin region of the United States, which hosts ~20% of domestic geothermal electricity generation capacity and much of the projected undeveloped and undiscovered resource, crustal heat flow is relatively high, so permeability...
New data yield new geologic insights at the Fallon FORGE site, Carson Sink Region, Nevada
Drew L. Siler, James E. Faulds, Jonathan M. G. Glen, Jeffrey B. Witter
2018, Geothermal Resources Council Transactions (42)
The geologic structure beneath the Fallon Frontier Observatory for Research in Geothermal Energy (FORGE) site represents a record of the Mesozoic through Cenozoic tectonism, volcanism, and sedimentation that has affected the Carson Sink local to Fallon, NV. A robust dataset confirms that the lithologic sequence consists of Quaternary through Miocene...
2D and 3D potential field mapping and modelling at the Fallon FORGE site, Nevada, USA
Jeffrey B. Witter, Jonathan M. G. Glen, Drew L. Siler, Dominique Fournier
2018, Geothermal Resources Council Transactions (42)
Accurate geological characterization of Fallon FORGE is important for preparing the site as an EGS laboratory. As part of this effort, a 3D geologic map was constructed previously from well logs, surface geologic mapping, 2D seismic profiles, interpreted gravity & magnetic maps, and a gravity-inferred basement surface. In this study,...
Quantifying uncertainty in Sr/Ca-based estimates of SST from the coral Orbicella faveolata
Jennifer A. Flannery, Julie N. Richey, Lauren Toth, Ilsa B. Kuffner, Richard Z. Poore
2018, Paleoceanography and Paleoclimatology (33) 958-973
The strontium to calcium ratio (Sr/Ca) in aragonitic skeletons of massive corals provides a proxy for sea surface temperature (SST) that can be used to reconstruct paleoclimates across decades, centuries, and, potentially, millennia. Determining the reproducibility of Sr/Ca records among contemporaneous coral colonies from the same region is critical to...
Land mollusks of the California Channel Islands: An overview of diversity, populations, and conservation status
Charles A. Drost, Jeffrey C. Nekola, Barry Roth, Timothy A. Pearce
2018, Western North American Naturalist (78) 799-810
The land snails and slugs have the highest level of endemism among all major animal groups on the California Channel Islands, with nearly 75% of the native terrestrial species confined to one or more of the 8 islands. In spite of this endemism, and in spite of the rarity of...
Building a response network to investigate potential pathogens associated with unionid mortality events
Eric Leis, Diane L. Waller, Susan Knowles, Tony Goldberg, Joel G. Putnam, Jordan Richard, Sarah Erickson, Emilie Blevins, Jesse Weinzinger
2018, Ellipsaria (20) 44-45
Unexplained mortality events have confounded the mussel conservation community for over 30 years. While the effects of chemical pollutants and environmental factors have been examined, few investigations have focused on the identification of potential mussel pathogens. Consequently, very little is known regarding the impact that pathogens have on freshwater mussel...
Characteristics of tropical tree species in hyperspectral and multispectral data
Matheus Pinheiro Ferreira, Cibele Hummel do Amaral, Gaia Vaglio Laurin, Raymond F. Kokaly, Carlos Roberto de Souza Filho, Yosio Edemir Shimabukuro
Prasad S. Thenkabail, John J. Lyons, Alfredo Huete, editor(s)
2018, Book chapter, Biophysical and biochemical characterization and plant species studies
Remote sensing has been hailed as a promising technology to provide spatially explicit information on tree species distribution. Such information is of high value for ecologists and forest managers, particularly in tropical environments in which it is acquired by costly field inventories performed at the plot level (∼1 ha). Over...
Hourly analyses of the large storms and atmospheric rivers that provide most of California's precipitation in only 10 to 100 hours per year
Maryam A. Lamjiri, Michael D. Dettinger, F. Martin Ralph, Nina S. Oakley, Jonathan J. Rutz
2018, San Francisco Estuary and Watershed Science (16) 1-17
California is regularly impacted by floods and droughts, primarily as a result of too many or too few atmospheric rivers (ARs). This study analyzes a two-decade-long hourly precipitation dataset from 176 California weather stations and a 3-hourly AR chronology to report variations in rainfall events across California and their association...
The natural capital accounting opportunity: Let's really do the numbers
James W. Boyd, Kenneth J. Bagstad, Jane Carter Ingram, Carl D. Shapiro, Jeffery Adkins, C. Frank Casey, Clifford S. Duke, Pierre D. Glynn, Erica Goldman, Monica Grasso, Julie L. Hass, Justin A. Johnson, Glenn-Marie Lange, John Matuszak, Ann Miller, Kirsten L. L. Oleson, Stephen M. Posner, Charles Rhodes, Francois Soulard, Michael Vardon, Ferdinando Villa, Brian Voigt, Scott Wentland
2018, BioScience (68) 940-943
The nation’s economic accounts provide objective, regular, and standardized information routinely relied upon by public and private decision makers. But they are incomplete. The U.S. and many other nations currently do not account for the natural capital — such as the wildlife, forests, grasslands, soils, and water bodies—upon which all...
Identifying opportunities for long-lasting habitat conservation and restoration in Hawaii’s shifting climate
Lucas B. Fortini, James D. Jacobi
2018, Regional Environmental Change (18) 2391-2402
Conservation efforts in isolated archipelagos such as Hawaii often focus on habitat-based conservation and restoration efforts that benefit multiple species. Unfortunately, identifying locations where such efforts are safer from climatic shifts is still challenging. We aimed to provide a method to approximate these potential habitat shifts for similar data- and...
Historical patterns of wildfire ignition sources in California ecosystems
Jon E. Keeley, Alexandra D. Syphard
2018, International Journal of Wildland Fire (27) 781-799
State and federal agencies have reported fire causes since the early 1900s, explicitly for the purpose of helping land managers design fire-prevention programs. We document fire-ignition patterns in five homogenous climate divisions in California over the past 98 years on state Cal Fire protected lands and 107 years on federal...
Evaluating riparian vegetation change in canyon-bound reaches of the Colorado River using spatially extensive matched photo sets
Michael L. Scott, Robert H. Webb, R. Roy Johnson, Raymond M. Turner, Jonathan M. Friedman, Helen C. Fairley
2018, Book chapter, Riparian research and management: Past, present, future: Volume 1 (General Technical Report RMRS-GTR-377)
Much of what we know about the functional ecology of aquatic and riparian ecosystems comes from work on regulated rivers (Johnson et al. 2012). What little we know about unregulated conditions on many of our larger rivers is often inferred from recollections of individuals, personal diaries, notes, maps, and collections...
Ontogenetic changes in swimming speed of silver carp, bighead carp, and grass carp larvae: implications for larval dispersal
Amy E. George, Tatiana Garcia, Benjamin H. Stahlschmidt, Duane Chapman
2018, PeerJ (6)
Bighead, silver, and grass carps are invasive in the waterways of central North America, and grass carp reproduction in tributaries of the Great Lakes has now been documented. Questions about recruitment potential motivate a need for accurate models of egg and larval dispersal. Quantitative data on swimming behaviors and capabilities...
